I saw a 1st gen yesterday with a color I'd never seen before. Also a blue. A bright blue. Like teal or aqua. Maybe it's not a custom color but I have certainly never seen one. I was going to take a pic (it was at Sam's club) but I couldn't park next to it - it was in a handicapped spot - so I would have literally just been walking up to some stranger's car in a parking lot and taking a pic. I thought it might look strange and suspicious so I am resorting to just telling you guys about it.
Oh! I guess it's not a custom color. It's called "Wave blue" and it was around in 2008. Huh. Well, maybe not "custom" but it should certainly fall into the "something you don't usually see" category.
http://gtcarlot.com/colors/Pontiac/Vibe/2008/Wave+Blue/" onclick="window.open(this.href);return false;